About The Refrigerant Leakage Sensor - Daikin VRV FXHA32AVEB8 Manual

10 | Maintenance and service

10.5.1 About the refrigerant leakage sensor

Installer and user reference guide
36
WARNING
The R32 refrigerant leakage sensor must be replaced after every detection or at the
end of its lifetime. ONLY authorised persons may replace the sensor.
NOTICE
The R32 refrigerant leakage sensor is a semiconductor detector which may
incorrectly detect substances other than R32 refrigerant. Avoid using chemical
substances (e.g. organic solvents, hair spray, paint) in high concentrations, in the
close proximity of the indoor unit because this may cause misdetection by the R32
refrigerant leakage sensor.
NOTICE
Functionality of the safety measures are periodically automatically checked. In case
of malfunction, an error code will be displayed on the user interface.
INFORMATION
The sensor has a lifetime of 10 years. The user interface displays error "CH-05"
6 months before the end of the sensor lifetime and error "CH-02" after the end of
the sensor lifetime. For more information, refer to the reference guide of the user
interface and contact your dealer.
In case of detection when the unit is operating
1 The user interface displays error "A0-11" and emits an alarm sound. The
status indicator blinks.
2 Contact your dealer immediately. For more information, see the installation
manual of the outdoor unit.
In case of detection when the unit is in standby
When the detection occurs when the unit is in standby, the unit performs a "false
detection check".
False detection check
1 The fan starts turning on the lowest setting.
2 The user interface displays error "A0-13" and emits an alarm sound. The
status indicator blinks.
3 The sensor checks if a refrigerant leakage or misdetection occurred.
▪ No refrigerant leakage detected. Result: The system resumes normal operation
after approximately 2 minutes.
▪ Refrigerant leakage detected. Result:
1 The user interface displays error "A0-11" and emits an alarm sound. The
status indicator blinks.
2 Contact your dealer immediately. For more information, see the installation
manual of the outdoor unit.
INFORMATION
The minimum airflow during normal operation or during the refrigerant leakage
detection is always >240 m
3
/h.
FXHA-A
VRV system air conditioner
4P673749-1A – 2022.11